/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerController.h
Set the client's class of HUD and spawns a new instance of it. If there was already a HUD active, it is destroyed.
void ClientSetHUD ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [AHUD](API\Runtime\Engine\GameFramework\AHUD) > NewHUDClass )